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I purchased these "compression" moisture wicking tanks because of the reviews. My order arrived 2 days before the expected delivery date. I'm a 5'4 bust 38DD, I am armed special police officer and I get hot fast. Normally, I wear Hanes A-shirts under my uniform shirt and a bullet proof vest. Half way through my building inspections my back feels soggy from sweating, I'm cold and sitting in front of a portable heater. This is my first night wearing these moisture wicking tanks and I am very very pleased. There was less moisture on my back during my inspections and I am not cold.